有限數字碼 的英文怎麼說

中文拼音 [yǒuxiànshǔzìmǎ]
有限數字碼 英文
final digit code
  • 有 : 有副詞[書面語] （表示整數之外再加零數）: 30 有 5 thirty-five; 10 有 5年 fifteen years
  • 限 : Ⅰ名詞（指定的范圍; 限度） limit; bounds Ⅱ動詞（指定范圍, 不許超過） set a limit; limit; restrict
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 字 : Ⅰ名詞1 （文字） character; word 2 （字音） pronunciation 3 （字體） form of a written or printed ...
  • 碼 : Ⅰ名詞（表示數目的符號或用具） a sign or object indicating number; code Ⅱ量詞1 （指一件事或一類的...
  • 有限 : limited; restricted; finite; a little; not much
  • 數字 : 1. （表示數目的文字; 表示數目的符號） figure; digit; numeral; character; numeric character 2. （數量） quantity; amount
  1. In term of the probability of communication system and perturbance theory, the model of the effect of srs to error bit ratio in communication system is established. through the way numerical of simulation, limitations to srs to error bit ration of communication system and input optical power, the number of channel etc are discussed. the obtained conclusion has definitely reference value to the design of practical communication

    根據數字通信系統幾率的特性和微擾理論，建立了受激喇曼散射對通信系統誤碼率影響的理論模型，並通過數值模擬討論了受激喇曼散射對系統誤碼率、最大輸入功率和通道數等的限制，獲得了一些對實際光通信系統設計有參考價值的結論。
  2. Hamalaya digital image technology company. ltd. which provides digital image and print service is located in wuhan optics vallay and has branches and chain shops in shanghai, shenzhen, beijin and changshaat the beginning of establishment, the managements considered how to take advantage of the internet. the ec department is charge of the item - the electronic business system

    喜瑪拉雅數字成像技術有限公司是一家專業從事數碼影像和數字快印服務的公司，總部位於武漢光谷，並分別在武漢，上海，深圳，北京和長沙等地擁有分公司和加盟店，公司于成立之日就考慮落地店與網際網路的對接，因此電子商務部於2001
  3. Dongdahong computer ( shenzhen ) co. ltd is a company which mainly serve in network system integration, safety monitoring system, net communication, digital video transmission, multimedia telephone conference, corporation telephone, public broadcasting, one card consumption management system, integrated software researching, and at the same time also serve in the distribution and sales of branded computer, notebook computer, office equipment, digital products, hotel ( vod ) song order system

    深圳市東達宏電腦有限公司是一家以網路系統集成、安防監控系統、網路通訊、數字視頻傳輸、多媒體會議系統、集團電話、公共廣播、一卡通管理消費系統、綜合軟體開發為主，兼營品牌電腦、筆記本電腦、辦公設備、數碼產品、酒店（ vod ）點歌系統等。
  4. Firstly, we generalize and analyze the advantages and present research of elliptic curve cryptography ; secondly, we study the basic theory of the ecc ; thirdly, we illustrate the safety of the ecc and discuss the elliptic curve key agreement scheme, elliptic curve encryption scheme and elliptic curve digital signature algorithm ; fourthly, we study fast algorithms of the multiplication and inversion multiplication of the element of in the underlying finite field f2m whose characteristic is two represented by the two basis of optimal normal basis and polynomial basis. we make improvements to the fast algorithm of the polynomial basis multiplication by hankerson and base on the experiments, we describe the properties and compare the advantages of the multiplication and inversion multiplication of the elements in f2m field under optimal normal bases and polynomial basis. results concluding from the study car be used as references in the realization of the elliptic curve cryptosystem ; fifthly, we overview the current fast algorithm of point multiplication, improve the fix base point comb algorithm, advance the speed of the whole system and remark the advantages and disadvantages of the popular algorithms based upon the experimental datas ; sixthly we realize the algorithm library of elliptic curve cryptography based on the f2m. only change slightly in our algorithm library can we realize the ecdh, eces, ecdsa based onf2m of anysize ; seventhly, we realize the ecc on two secure elliptic curves, including ecdh, eces, ecdsa

    本文首先介紹並分析了橢圓曲線密碼體制的優點及研究現狀；其次研究了橢圓曲線密碼體制的基本理論；第三，分析了橢圓曲線密碼的安全性並介紹了密鑰共享，加密，數字簽名等橢圓曲線密碼體制；第四，深入研究了特徵為2的有限域f _ 2m中的元素在多項式基和最優正規基表示下的乘法運算和乘法逆運算的快速演算法，並對hankerson等人提出的多項式基下的乘法運算的快速演算法作了改進，而且在實驗的基礎上不僅分析研究了f _ 2m域中元素在多項式基和最優正規基表示下的乘法和乘法逆運算的性能，還對這兩種基表示下的f _ 2m域中元素運算效率的優劣作了比較和研究，所得的結論可供在實現橢圓曲線密碼體制時參考；第五，研究了目前流行的計算橢圓曲線標量乘法的快速演算法，同時改進了固定基點梳形法，提高了整個系統的速度，並在實驗的基礎上分析研究了流行演算法的優劣；第六，實現了基於f _ 2m的橢圓曲線密碼體制的演算法庫，在我們的演算法庫中只需稍微改變便能實現基於任意尺寸的f _ 2m上的ecdh ， eces ， ecdsa等橢圓曲線密碼體制；第七，實現了兩條安全橢圓曲線上的橢圓曲線密碼體制，包括ecdh ， eces ， ecdsa 。
  5. The one - dimension effective fpk equation of colored noise serves as our starting point to evaluate the effect of noise color on communication system design. the theory of ber versus input snr per bit is developed and a new procedure to determine the system parameters that influence the minimum ber is proposed. it is shown that the communication system ' s performance is related to the turnable system parameters as well as the noise correlation time

    在指數相關高期色噪聲情況下，本文以一維有效色噪聲fpk方程作為研究的出發點，理論分析了限帶高斯色噪聲通道中脈沖幅值調制數字信號傳輸的誤碼性能，給出了非線性接收器的接收性能曲線，充分體現了噪聲相關時間的影響。
  6. Guilin new mingke communication equipment company qpsk modulator, mpeg - 2 encoder and multiplexer. digital microwave equipment

    桂林新明科通信設備有限公司- qpsk調制器mpeg - 2編碼器復用器數字微波設備
  7. In hong kong centro digital pictures / golden harvest employed more than 500 elaborate special effects - including the use of hong kongs first digital stuntmen - to augment the live action of the martial - arts saga a man called hero

    香港的先濤數碼特技有限公司和嘉禾電影有限公司使用了超過500個特技?包括使用香港第一個的數字特技人來增強《中華英雄》裏面功夫的逼真度。
  8. Signature and verification systems, such as ecdsa etc, the discuss about key exchange systems such as deffie - hellman systeme, etc. this thesis also discussed several applications and information safety products of the elliptic curve cryptosystems at the finite field too, such as digital signature, the group signature, the application in the smart card

    Ecdsa等簽名驗證體制的選取， deffie - hellman等密鑰交換體制的研究。論文也討論了基於有限域上橢圓曲線公鑰密碼系統的若干應用和信息安全產品，如數字簽名，組簽名，在智能卡中的應用。
  9. The algorithm have the good one - way property, high sensitivity to initial values and good security due to the intrinsic characteristic of chaotic system and rijndael algorithm. the simulation experiment demonstrates the convenience and good hash performance ; 3 ) a new scheme of digital voice secure communication was proposed based on chaotic modulation without additional synchronization. the modulation sequence generated by chaotic logical mapping was used to encrypt the digital voice signal

    混沌系統和rijndael演算法的固有特點使該演算法具有較好的安全性、對初值有高度的敏感性以及較好的單向性能，並且易於實現，是一種有效的單向hash函數； 3 ）研究了一種無需同步的基於混沌調制的數字語音保密通信系統的方案，利用邏輯映射產生混沌調制序列，以該序列作為密碼對數字語音進行加密處理，為了更好的隱匿信號特徵，混沌調制在小波分解的基礎上，對不同的通道使用不同的參數進行，並借鑒混沌掩蓋對信息信號進行了限幅處理，使密文完全隨機化。
  10. Printing the documents of the apec meeting with the digital printing technology apec digital express print company limited, shanghai

    數字印刷技術印製apec會議文件上海埃配克數碼快印有限公司
  11. All of these show that a potential big market of video server is coming into being. as a company that special at r & d and production of digital video products, the hunan powerise digital technological co., whose history is not more than 3 years, how to face this new potential industry. this paper give a forecast of the video server market after analyzing the development of correlative industry

    湖南創智數碼科技股份有限公司作為一家成立不到3年的專業數字視頻產品的開發、生產廠家，如何面對這樣一個新興而又潛力巨大的產業，本文通過對相關行業發展動態的分析，對視頻服務器的市場發展進行了分析預測，同時分析了國內外數字視頻技術的發展動態，分析了該市場國內外的競爭態勢，並具體分析了幾家主要競爭者。
  12. 4 lee c y, lu e h, lee j y. bit - parallel systolic multipliers for gf fields defined by all - one and equally - spaced polynomials. ieee trans. computers, 2001, 50 : 385 - 393

    近些年來，有限場數值運算被廣泛應用在編碼理論計算機密碼數字訊號處理，邏輯設計，和隨機數產生器等領域上，受到相當大注意。
  13. Conventionally, dtv systems adopt coding schemes such as rs or convolutional codes, or concatenated codes, where the error correction performance is still quite far away from the shannon limit

    通常的，數字電視系統採用的通道編碼方案為rs碼或卷積碼，或二者的級聯碼，它的糾錯性能與香農極限相比，仍有一定的距離。
  14. But because of the huge data quantity of digital image, together with the limited transmission speed, we must code, compress and decode the video data

    然而，由於數字圖像的數據量較大，而現在的網路傳輸速度有限，所以必須針對這一問題對視頻數據進行編碼、壓縮及解碼。
  15. In digital microwave communication, inter - symbol interference ( isi ) is inevitable because of multi - path fading, finiteness of channel bandwidth and faultiness of channel

    在數字微波通信中，多徑效應和通道帶寬的有限性以及通道特性的不完善導致數據傳輸時不可避免地產生碼間干擾（ isi ） 。
  16. The major tasks include : ( 1 ) expand the schema theorem for ga. the schema theorem with binary coding advanced by professor holland is expanded to limited integer, letter, floating point numbers the number of which value is limited, and their hybrid coding. ( 2 ) put forward replacing by the excellent chromosome ga ( recga ), superiority colony first ga ( scfga ) and improve the ga ; ( 3 ) make probability convergence analysis of recga using the theory of markov chain, random process ; ( 4 ) make convergence analysis of scfga using the principle of contractive mapping in functional analysis theory ; ( 5 ) design the test programs ( cap ) to resolve np problems ( course arrangement ) with gas ; based on recga, modify the arithmetic and then conduct tests

    主要有以下幾方面工作： （ 1 ）將二進制編碼遺傳演算法的模式定理擴展到由有限整數、字母或取值個數有限的浮點數編碼，或它們混合編碼的遺傳演算法范圍； （ 2 ）提出最佳個體替換策略遺傳演算法（ recga ） 、優勢群體優先策略遺傳演算法（ scfga ） ，對遺傳演算法進行改進； （ 3 ）使用隨機過程理論markov鏈對recga進行了收斂性分析； （ 4 ）使用泛函分析理論壓縮映射原理對scfga進行了收斂性分析； （ 5 ）使用遺傳演算法設計了解決np類問題（排課問題）的測試程序（ cap ） ，並根據recga對演算法進行改進並進行測試。
  17. It overcomes the shortcomings of encrpytion techniques in multimedia version protection and multimedia authentication, and provides the complementary solution for encrpytion techniques. starting with the practical requirements, this paper gives an analysis on the current work of digital watermarking related to the multimedia authentication thery, and researches on the modern cryptography theory

    本文從圖像認證的實際需要出發，分析了目前數字水印在認證方面已有的工作和研究現代密碼學的基礎理論，闡述了二者在認證方面各自的特點和各自的局限性，提出將二者結合起來設計在理論上安全的水印演算法。
  18. At last, by using the factorization properties of cyclotomic polynmials on finite fields and the construction characteristic of cyclic codes, we present the relation of the period distribution of cyclic codes and the period distribution of their dual codes, establish the explicit formula for the number of the codewords without inner - period of the cyclic codes and their dual codes, find the method for computing the dimension and the period distribution of narrow - sense primitive bch codes, and study the inverse question of period distribution of cyclic codes

    最後，利用有限域上分圓多項式的分解特性和循環碼的構造特點，揭示了循環碼的周期分佈與其對偶碼周期分佈之間的內在聯系，確定了一般循環碼及其對偶碼內無內周期碼字的精確計數公式，決定了狹義本原bch碼的維數與周期分佈，討論了循環碼周期分佈的反問題。
  19. Image compression encoding is also an important and key question in digital image transferation, and it can process as more image information as possible with limited bandwidth and time cost

    在數字圖像傳輸中圖像壓縮編碼也是一個重要而關鍵的問題，可以用有限帶寬和盡可能少的時間傳輸內容盡可能多的圖像信息。
  20. Under the comprehensive research and generalization of digital image processing, we got the general procedure about digital image processing. based on the general procedure, following the agile method and extreme programming, applying the recursive procedure composed by require analyze 、 framework design 、 coding, finally we got a experimental 、 stable 、 opened score platform. we checked the theory by practice

    通過對數字圖像處理的全面研究和總結，得出數字圖像處理的一般過程，以此一般過程為基礎，按照敏捷思想和極限編程方法，通過需求分析，架構設計，編碼等幾個不斷迭代進行的階段，最終開發出一個具有實驗性質的、穩定的、開放的評估平臺，運用實踐來檢驗了理論。
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